Shock-absorber



F. TATAR.

SHOCK ABSORBER. APPLICATION FILED IAY 20, ll`9l9.,

1,331,885. Patented Feb. 24,1926. l

ATTORNEY UNITED sTATEs PATENT oEEioE.

FRANK TATAE.,-0FNEW Yorin, N. ir. 1 v

SHOCK-ABSORBEB.

Application led May 20, 1919. vSeriallol 298,490. v p

i the bolsters 12 and13.

To allwhom t may concern:

Be it knownthat I, FRANK zen of Hungary, t in the county of.` New York and State of New York, have invented new land useful Improvements in .Shock-Absorbers, of which the following is a specification.

My invention relates to means for use in vibratile buildings, and in connection with drop-hammers and like apparatusV having a hammer-action. f j

Owing to the safety ordinances and building regulations in force in modern cities and communities, vthe operation of drop hammers and similar apparatusis forbidden TATAR,` a citiin buildings, which, by reason of their: con-` struction, condition or age,1ar.e Vcompara-` tively andl injuriously responsive to sharp end heavy blows. I v

My invention, therefore, has as its para-V mount object the provisionof a simple and eflicient structure, 'on which to cushion theA stead of being communicated directly to the building. p p

. YVith the foregoing andfother objects in view, the invention residesin the detailsof construction and in the arrangement and combination of .parts as hereinafter de-V scribed, defined inthe annexed claims, and illustrated in the accompanying drawings, in which is shown the preferredembodiment of the invention as reduced to practice, and in which Figure 1 is a top plan view of my improved structure.

Fig. 2 is a side elevational view with parts in section, showing the structure as supported upon the building floor, and as 'cushioning the anvil portion of a drop-hammer, herein shown in broken lines.

With more particular reference to the accompanying drawings, the numeral 5 is employed to denote floor-joists, which areV supported in the usual way by the building beams or girders as 6, and which support in the usual way the flooring 7 Y Placed upon the flooring and rigidly secured thereto, and as well to the loor-joists or beams accordingly as conditions require,V by any suitable means for instance by screws as 8, are spaced parallel sills 9 and 10. Arranged in spaced parallel relation upon these ,sills and .Secured thereto, for ,instanceiby residing at New York city,

spikes.V as` 11, are

. specication of Letters Patent. l t Patented Feb24, 192.0;

Working through bores 14 provided for the Y pur ose in the holstersr 12 andA 13 are plungerolts 15, of which, in the present embodiment of the invention, there `are four inv number. Upon the heads 16 of these plunger-bolts, underneaththe holsters, are supported the planks orother suitable horizontal members 17-,and 18, it ,being notedthat the plunger-boltsare'.preferably located in such alinedpositions that the planks l7gand V18 come between thesills 9 and 10with which they are parallel, and also'between the holsters 12 and 13, whose planes they traverse, and the flooring.

= Cut in the top Vsidesof the bolste'rs,`co n 'I centric 4with the'bores 1 4, are circular cavi-` ties or seats 19, in which rest the lower ends 'l of the coil or cylindricalsprings 20, which surround the plunger-bolts as shown. Upon thetopends ofi-each pair..ofsprings,thus rising fromeachbolstenis aplate21, provided with suitable openings 22 to permit wthe top..extremities of the 'plunger-bolts to project therethrough. Surrounding ,thel plunger-bolts,above the plates 21are strong wwasher-disks 23, and over these are screw-v threadedupon the plunger-bolts the nutsf24, Bythis arrangement, it willfbereadily seen,

that the planks` 17 'and 18, although located belowv the holsters, Vare nevertheless` cushioned upon the same, so that the vibrations:

incident to the striking of vigorous and heavy blows upon theplanks or upon. anA

objectsupported thereon, will be taken upand absorbed by the springs to a large extent, in-

stead of being communicated directly to the flooring, joists and beams, of the building.

As shown in the accompanying drawings,

vthe anvil 25 of the hammer machine is placed or secured upon the planks 17 and 18 in a central position with respect to the'plungers and springs, so equally distributed thereon. The articles to be hammered, shapedl or forged, are -placed or supported upon the anvil in any custom-` ary manner, in position to be properly operthat its weight may be ated upon by the'hammer 26 under its descending strokes. Under each blow struck by the hammer, the planks and `plungers v descend uniformly toward the flooring, com.

pressing the springs, which absorb the force of the blow and as well the vibrations re-` sulting therefrom.

In buildings, Vwherein drop hammers and similar appareil-1S have hrtoare been for bidden to operate, the same are now permitted to operate when used 4in conjunctionY with my improved shock-absorbing structure, it having been ascertained by tests satisfactory to the building inspectors, that theblowsvof the hammer no longer have serious vibratry effects on the building.

Having thus described Imy invention, what I claimV is A shock-absorbing structure for use'in buildings and on which an anvil or similar device may be supported, including bolsters i and means for supportingthem 1n spaced parallel relation above the building floor,

coil-'springs seated in and rising from said bolsters', plunger devices extending vertically ythrough said bolsters and'forming vthe axes of said springs, meanson the top ends cavities and rising from said bolsters, -`lunt ger'devices extending through said ores' and Vforming ax'esfor said springs, connec-- tions'between the plunger devices of eachV bolster resting upon the topends of the springs, means associated withv the top endsV Y of the plunger devicesfor holding said conffor the purpose specified.

3. `In a device ofthe'character described,y

nections in position upon the springs wherebythe plunger devices are resiliently cushioned, and means supported by and between the plunger devices below the bolsters for carrying an anvil or similar device, as and the combination with a pair of bolsters and means for rigidly supporting them is spaced parallel relation, coil-springs seated in and rising, from the bolsters in verticalv parallel planes which come between the planesof the lbolster supports, plunger devices extending upwardly through said bolsters and forming axes for Vthe springs, means on the top ends of the plunger devices and resting on'the top endsl of the ysprings whereby resiliently to support theplunger'devices on the springs,

and means supportedby and 'betweenthe plunger devices below 'thebolsters for carrying' an anvil device whereby when a blow is Y struck upon the anvil theV same may'have bodily movement relativelywith respect'to the bolsters. Y

L In afdevice of the character described, the/combination of a flooring, sills secured to the flooring in spaced parallel relation, bolsters secured upon and crossing the sills in spaced parallel relation, said bolstersl Ibeing provided'in parallel planes between the sillsnwith vertical bores opening into concentriccavities, coil-springsseated in said cavities andrising from the bolsters, plunger "loV devices extending upwardly through-"the" bores and Jforming axes for the springs,

and resting on `the top ends ofathe springs whereby resilientlyto support the* plunger devices on the springs, connections-v between 'the top ends of the bolsters,and means supported by and between the plunger devices below'the bolstersfor carrying an anvil device whereby when a blow is struck upon the .anvil vthesame may have relative bodilyrmovement to prevent the flooring from sustaining the force ofy the blow Aand the resultant vibrations. n

In testimony whereof Ihave signed my name to this specification.

ymeans on the top ends of the plungerdevices `Y FRANKTATAR. f r` 

